Emergency descent device

Details Emergency descent device Emergency descent device

1985-03-07

1985-11-26

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

With storage device for supple escape

Reel

182233, 182241, 188290, 254377, A62B 112, A62B 116

Patent

active

045549974

ABSTRACT:
An improved descent device including a rotating spool on which is wound a cable is provided with a fluid rotation-retarding means having a plurality of vane members mounted for rotation in a fluid-filled chamber. The vane member is comprised of a vane shell receiving a vane core which is normally biassed in a radially inward direction and is extensible from the vane shell by centrifugal force. The retarding force depends on the contact surfaces between the vane members and the fluid which vary with centrifugal force.

REFERENCES:
patent: 1200198 (1916-10-01), Jersild
patent: 3847377 (1974-11-01), Byrd
patent: 3946989 (1976-03-01), Tsuda
patent: 4018423 (1977-04-01), Belew
patent: 4416351 (1983-11-01), Geurtsen
patent: 4452430 (1984-06-01), Kankkunen
patent: 4463830 (1984-08-01), Geurtsen
patent: 4480716 (1984-11-01), Soubry

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